Planoqrapii co



A. A. TIBBITS.

LOCK.

APPLICATION FILED MAY 24. 1918.

1,309,050; Patented July 8, 1919.

1' E CULUMBXA PLANOGRAPH co., WASHINGTON. n. c.

ARMAND A. TIBBITS, OF OMAIIA, NEBRASKA.

LOCK.

Specification of Letters Patent.

Patented July 8, 1919.

Application filed May 24, 1918. Serial No. 236,327.

To all whom it may concern.

Be it known that I, ARMAND A. TIBBITS, a citizen of the United States, residing at Omaha, in the county of Douglas and State of Nebraska, have invented certain new and useful Improvements in Locks, of which the following is a specification.

-My invention relates to improvements in locks, and refers particularly to a hasp lock, the main object of the invention being the provision of a tumbler lock of the simplest, cheapest and most durable construction, which can be opened or unlocked only with the proper key, which will provide a secure and reliable lock for many purposes and which in all respects will be practical and eilicient.

With this object in View my invention consists of a hasp lock of the character stated embodying novel features of construction and combination of parts for service, as shown, described and claimed herein.

Figure 1 is a perspectiveview of a hasp lock constructed according to my invention.

Fig. 2 is a side view of the lock With the cover removed, showing the entire detailed mechanism of the lock.

Fig. 3 is a side view of the sliding locking bolt.

Fig. 4: is a sectional view on line H' of Fig. 2, and

Fig. 5 is a perspective view of the spring for engaging and retaining the sliding looking bolt in locked position.

Referring by letter to the drawing in which the same letters of reference are used to designate similar parts in all the views:

The letter A designates the frame, main portion or body of my lock which may be described as a flat plate of oblong shape, having an opening 13, at one end to receive a chain or other attaching means, also formed with the chamber C, at its other end to provide the hook forming the keeper D, cut away horizontally at E, to form a seat for the sliding locking bolt, as will presently appear, and further formed with the cavity F, to provide the space and compartment for the latches or tumblers G.

These latches or tumblers are formed at one end with the head H, fitting in a recess J, of the body and thus pivoting the'said tumblers in the cavity of the body, and at the other end said tumblers are formed with the shouldered portion K, and with the lower waved edge L, which is engaged by a key of suitable formation to raise said tumblers and release the shouldered end thereof, the tumblers being forced normally down by the flat springs M, secured at one end to the upper side of said tumblers and having their free ends 1 engaging the wall of the cavity in the body.

Fitting against the'seat E isthe sliding bolt N, which as shown engages in normal or locked position the keeper of the body, and the sliding bolt is formed. with the reduced end 0 for guiding the bolt, and further provided with the latch or tumbler engaging shoulder P, the irregular edge Q, and the key-way R, in the path of which is disposed the curved portion S, of the bolt retaining flat spring S having one end S", anchored in the body and having its other end formed with a hook S retained in a notch T in the body of the lock, the spring thus being disposed in a channel T of the body and being engaged by the key to be released from the bolt to permit the bolt to be moved. The sliding locking bolt may be moved forward without the use of a key.

The mechanism of the lock is retained in proper position by means of the cover U, formed with the key slot U, the head of the key when inserted engaging the tumblers and lifting them from engagement with the sliding bolt, and at the same time engaging the curved portion S of the flat spring, which action of the key frees the bolt and permits it to be released by turning the key in one direction, or locked by turning the key in the opposite direction, said cover being secured to the body by means of the rivets U and securely retain the cover in place.

The lock may use any desired number of tumblers or latches and they may be changed slightly in order that each lock must have a particular and individual key to lock and unlock it, and taken as a whole it must be apparent that a hasp lock constructed according to my improvements will prove reliable, eflicient and practical in every respect.

I claim:

A lock comprising a body portion having a hook at one end for engaging a keeper and means'at its other end for pivotally securing the other end to the edge of a door or the like, said body portion vhavin a chamber for the reception of a slidable bolt, one end of said bolt being adapted to move into and out of engagement with the hook, the other end of the slidable bolt being provided with a reduced portion, spring actuated tumblers pivoted in the chamber their free end being adapted to engage the end of the reduced portion of the slidable bolt for maintaining the same in locked position, a spring detent having one of its ends secured in the body portion and its other end disposed in a longitudinal slot in the reduced end of the slidable bolt, said longitudinal slot having a right angle slot spaced from the inner end thereof and adapted to receive a right angle integral arm formed at the end of the spring detent, said tumblers, spring detent and slidable bolt being adapted to be engaged by a key for raising the tumblers, depressing the spring detent and forcing the angled end thereof downwardly into registration with the inner end of the longitudinal slot so that the angled end of said spring detent 20 will be received by the same When the key moves the slidable bolt rearwardly to unlocked position.

In testimony whereof I aflix my signature.

ARMAND A. TIBBITS.

Witnesses:

J. W. MARTIN, WV. A. COT'IRELL.

Sopics 0! this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

